Mold and clamp therefor



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RUBBER 'WORKS asomo/i.

Specification et' limitation tiled July 31,

To all 'who/m; t may con com Be it known tliat l., lleo'ron V. Louer-1', a subject oi. the King of Great liritain7 residing` at Hartford, county ci? i-lartlford, and State oi Connecticut, liave invented certain new and useful improvements in lilolds and Clamps Vlfhereior, of which the following is a full, clear, and exact di-zseription.

This invention relates 'to sectional inolds lorv vulcanizingaj rubber articles and espe cially the elanips used in injunction there with to hold the sections of a mold against separation by pressure applied internally tile-roof.

lleretoioi'e niolds llave been varioni-ily` shaped to receive clumps ol one forni or another but tiles-e prior constructions llave not been capable of that quick and easy asseoibluge or disasseniblagni which it is an aini olf ille present invention to provide together with diufability, strength and low cost in their manufacture. The invention further aims to attain tbe above objects in a type of construction which permits a plurality of inolds to be stacked upon one another. And still further it aiins to provide a type of clump that sunk or embraced within the general outlines oi the .incid when in nornini working' position.

The invention consists essentially oi a plurality of mating sections proliral)ly ot annular forni shaped to impart a desired coniiguration to an article vulcaiiieed tliei'ewitbin, and of a plurality of holdin;Y ineinbers or elainps of preferably dumb bell shape which are individually adapted to enter slots in the periphery olf the sections and, to bold tlie ser: ns when aisen'ibled against displacement by an internal fluid presenti-i or other nwdium tending' to separate tlienin 'lfl K.nvent'uin illustrated in the accom panyi fr drawings in which:

liizqore l a plan view oil i, sectional n'iold embodying; the invention `with (soins oi tlie clamps or holdinga members in plann Fia". 2 is a section of tlie same, and

Fig. 3 shows one of the unitary cleinps or holding members in perspective The invention is illustrated applied to an internal fluid pressure type ol mold compri ingr opposedv sections l and il having reversely curved or liollowed inner laces and. Il respectively Wliieli impart tlie desired Letters '.llatent.

SSIG'Nllt 'lT THE HARTFURD Patented Feb. 1, 1921. will. tls-Fini No. ldall.

configuration to an article suoli as a tire 5 and outer :laces and i which are prefer-- ably liet but may be shaped otherwise to permit stacking a plurality of molds in a` press preliminary to a vulcanizing heat treat ment thereof. The sections l and@ are pro vided with. tbe usual lap joint indicated generally by tlie numeral 8 for closing olf the aiticie cavity at the tread 'portion of the tire, it' tbe article be a tire, whose beaded portion nifty be closed ofi in various suitable Ways lor instance by tbe bull ring 9 or by tlie necli of an internal core suoli as disclosed iu patent to l-loplrinson, 1,289,774, granted Dec, 3l., lille. llie specific means lor @losing oil* tlie article cavity' forms no part eti the present invention which it is to be 'understood .not liinited to any particu lar type of sectional inold Wlie'thcriinal or setting or liowsoever subjected to pressure.

The foregoingr relates to general and old construction; what follows pertains to the improved features constituting more particularly the present invention.

The mold sections l and 2 are formed in their outer and inner periphery in directions transverse and preferably at right angles to tbe plane of tlie mold to i'orn'i the slots l0. ln its outer ieee each section notehed'as indicated at ll around the ends of the slots to receive tbe lieads l2 oi clamps or holding members i3, liotli beads l2 being,f preferably, but not necessarily, integral with tile inter mediate reduced portion inasmuch as nuts not shown) could be substituted for one or both of the heads, ii' desired. The o posed faces Zbl. oi' tiie beads are preferab y, but not necesszuilj;j made parallel, or substantially so, and they are spaced apart a dis tance permitting; dy insertion of the clamps in tlie slots l0 Without allowing an appreciable or prohibitive endwise meile# nient thereof. tlsbaped wear plate/$ ofv steel or other durable instal, may be secured by screws lo or otl iwlse in. th

fe notches 11 around. the open e of tbeslo t 10 lu nso tlie sections oi `the Ioi are assembled about the article or tire with lapped joint il closed and the respective pairs of slots lil in alinenient 'when the clamps or lioldinp; members 13 may be readily inserted in tbe ots l() to 'their normal wor. inar position in wbicli they are located preferably enu 3 0 linie lo niiinipiiline.

ini

2o 'free "vorA bending" slrcsscs, :ind ii 35 ions beingv shaped to receive Suid ngen wil'iiiii liir ontiinoe: ol line iiiold. iio'ili J nilor sin@ faces :ind :il its iiriiplir'ry. 'lien internal prossnrii is iiiiiind lo in-,

i Saumons ol llio nioid lending` lo wiiziiiiio ,ii in lixod nent rim rinniiw: i'ioid lin` Si rolzilion. preiiiilorniincd iij; iin` dial; nw lio ,en lie opposed fairies ll oi' liio ciiiiiiii.

ri'iie dinniilliiii rlinnps :iro siniiio :ind strong, :ind rvqniro no skill ;iiid wry iiillii Tiwy do iol iii'ojwl beyond liio outlinel of lilo :i wnililfd iwlions eiliie "iig lili@ sides or wriiiin 'n 'i' :ind noi; liieijr in bf: :iroidieiiliiiiy dinan; inurl. The @linups licing :irrinignd iriioiijf iiil'iiin 'flio periphery olf' liio nioid wriions :irc Qiiii 1; ori io :i puro tension in liieir rednurd por- ;n and lo n pure sinful-ing Siria- 5 iii: the jiinoon of 4Elio lioiiri ri'itii lin; rodnred por lion. 'liojv are in ii woll imiiinrwi mi# 'ringemcnt of the opposer io tendency for linz nro is applic-,ri in Home. prior devious. iius' described my inve i 1 i; new and desire to proies lors Batam :s:

. A mold for Vuicanizing ii 1f coinolcmenury -1 skinned iniioilily removable members for 'iol Sections against relative latein?. diLi mani. beyond undetermined limit? sin@ :fec-

comploeiy Within their oiiiinffe wlmi #Bambini lioivovcr voi'ifecl iriivroiiy in Lions li rely to be disengaged in iin hun il iie molds ire ;ivoidcd. A mold for annular foiufllrr c miini'ron compiemenlzary connu@ :nini

sections provided peri' ily lzranoverfsellif flisnosed Slots,

holding momia rs of .iii

i3d-i1 marginal walls i l; opposite sides ot nold for annular complementi provi/ieri disposed slot-s Vz i notches in the outside las y and holding l .l

` i shaped ".30 enter said, @he marginal slots of and Within tira no1 mold for annular z in iioiifiiiinaliion, opposed @nim-ii@ :annular is provided [ioriplii-rzil 1 Sinisi lerininzitiiig in @nl 1 ol. o iz'efnriin y Joclioi, :incl niciniioris holding ,--iir-ii Ctionii in fixed rolziliion` said nioniiior` onirii ooiiiirisiiig tension resisiino' Oorloii inrliliio 1n ai Slot and siioiir resin ing gorl oan'iii iidzipled lo onnjiigo liir. liolloni will oi n inili-ii :il opiwil'o sides ol ii sini.` :ind :liiid nir-niiiifi's lying: viiliroiy ii'iliiiii lin` oiiliiinl ol iinl :iwoiiiiiod sorlioiis \\iiiii inhoilid in wirkung i o'iii in.

5, nioid i'or :iiiiiiiizir rniiiior :irlirilw4 in lndiii;A iii roniiiinnlioii opiiiisvd :iiinnizir :ind siiiisliiiiliiiily iii'rniiir eifrlioiis o:i ii Vdiniwd in ono sido lo iininirt :i dosirod oxlirnni von Aigi'inwilioii lo lin` iirliiios :ind on lin oliior .Sido lo giorniil, Lilo lziiiring ol :i iiiiirxiiili)v ol' riirii il ymid srrlioiis` iniiip; provided iziilr ifii'ii opoiiriidcii siol: irliii'ii rugia- ,-,ilii siniiizir siolr. in lvlio oiinr soclioiis.

nioniiiorslor iioiiliiigj :smid soiflfion` di'sz-iziriinrii'l ii'iioii :isfsoniiiiod :iiionl lln-` iiriirii. c iid mcniiiors iiziringg' :i rodnrcd poi-lion infsorliiiiiel iirsiiid Siols lo n position ,riliiin lliio periphery o.' liio svulioni; :ind iioiids lixod :il opposite @nds or linl i'vdiii'od porliions irliicli :iro udziiilod lo (winzige (inix lions iici'ond tiio ends oi' liiir wirds, siiid iioni; lining;` siiiistziiiliziiiy lrco ol' projo l liiiiir onlor poripiicrios.

Ymold for :iiiiiuiiiir ruiiiior iirliriohiiicindinf in ciiiiiiiii'iiilion :i iniir olt rompio nienlnry :innnizir Sorlioim cinii ol ii'iiii-ii iizis i inner ooiicnvo :ind :in oiltor liiil` inve. "iiiiii ,lxillor faire is doSigncd lo pui-mil Slurinng :i piiirziiily of lin` inolds, `nid olioiis lil-ing; respocliroi): proridid iiilii rcgislrringl' siols lorniiniiliiig' iii oiiiiirmd noliriiofs :idinifcnl' lin lint laicos. :ind violi- ;iilid inriiiiiorr; iifsndid nl liirir oppdeilo india irri oi" n ninxin'inni ionnlii nol'y oxrorwiiir;i tiio. d' inca iiolwoon 'lilo lint laicos oi'E :iswniiiiid 'ii ins said nienilwrs boing iiodiliv invoil- .nid siolh iiy inovoniont iii pinningv L. 'i rlio pianos of liic onlir iizil` lin-rsV sections.

nioid 'l'ol :iiiiinizir rniiiior :irliclos in- .l in combination si 1mi;- ol compirv' :innniiir soclions czi 'it oil \\'iiiiiii iiiis concave :incl :in onlor liiili invii, iller zico is designed lo iiii'iiiily 1' zi 'plurality oi"V the nioldaI :sziid iieinp; respcrlgiroiy providrd willi i'iylig'iezirrizig sioljs lrrniiiiiiliii.;r in iriiiairriid nutrirsi odjnooin; llio lint Liceo, elongated nisnilr lion/dud :it liioir opposile finds :ind of i niiixiinnni longlli not radin llio dint-nivo@ bolrioon iliio lint 'lieues o wsrniiilcii nini .Quid infin. iiors boing iiodiiy insert i in id slots by movement iii plums 'riiiisviii'io line iiixini` 0l? iio onlin' liiii limos of iii@ sortioiin` :ind :i wmir pluto in Suid f i elimine-nini@ by tiil iieiids of liio clonnr f innniiiir Sections mieli 'prorii'iod in ilsA .'iniiini :i niinin'nnn poriiiiiory willi 'or nitiiiliiig in ii il1riics,'niid ii iliiriilily im ini one-pince holding; nirniiiQrS iiodiiy .if `lo :indxl l'roni l'iiir norinui working i in s: sloli; wliore llioy ii-r. located lili lll() entirely within the outlines of the assembled in the other section, and a corresponding sections. plurality of solid dumb bell shaped clamps 9, A vulcanizing moldvhaving a pair of removably fitting into said slots. 10 nmting.ann'ulor sections shaped to impart Si ned at Hartford, county of Hartford, t the desi'rcl configuration to an article, cach and tate of Connecticut, this 11th day of ont said. sections being provided with a plu- July, 1919. :urelty of slots registering with similar slots HECTR V. LOUGH. 

